#include <stdio.h>

int main()
{
    int n = 0;
    scanf("%d", &n);
    int i = 0;
    int j = 0;
    for (i = 1; i <= n; i++)
    {
        for (j = 1; j <= n; j++)
        {
            if (i == j)
                printf("*");
            else if (i + j == n + 1)
                printf("*");
            else
                printf(" ");
        }
        printf("\n");
    }
    return 0;
}